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TABLE 2 (CONTINUED) <br /> ANALYTICAL RESULTS GROUNDWATER <br /> SHELL SERVICE STATION <br /> 620 WEST CHARTER WAY STOCKTON CALIFORNIA <br /> (All results In parts-per million) <br /> Monitoring Date Total Petroleum Aromatic Volatile Organics <br /> Well Collected Hydrocarbons <br /> Gasoline Benzene Toluene Ethyl- Total <br /> benzene Xylenes <br /> MW-9 03/28/90 110 18 20 2 1 12 <br /> 07/31/90 FLH FLH FLH FLH FLH <br /> 10/24/90 110 20 25 22 13 <br /> 01/31/91 120 27 26 25 15 <br /> 04/26/91 120 21 24 22 15 <br /> 07/23/91 110 18 22 21 15 <br /> 10/30/91 220 21 27 26 21 <br /> 01/28/92 200 25 24 27 18 <br /> 04/30/92 160 20 26 3 6 24 <br /> 07/10/92 110 22 24 2 9 17 <br /> 10/09/92 130 18 20 19 16 <br /> 02/20/93 290 140 180 47 36 <br /> 05/28/93 120 39 26 11 12 <br /> 08/27/93 16 0 330 < < 0 840 <br /> MW-10 08/01/91 0 069 00026 000037 000043 < <br /> 10/30/91 < 00033 < < < <br /> 01/28/92 83 00011 000049 000046 < <br /> 04/30/92 061 0 032 0 057 0 011 0 066 <br /> 07/10/92 < < < < < <br /> 10/09/92 < < < < < <br /> 02/19/93 < < < < < <br /> 05/28/93 < < < < c <br /> . 08!27193 < < < < c <br /> NOTES = Not analyzed <br /> FLH = Ftoating liquid hydrocarbons <br /> < = Below Practical Quantitation Reporting Limits per Tn Regional Board Staff Recommendations for Preliminary Evaluation and Invesbganon of <br /> Underground Tank Sdes (August 10 1990) (PQL for BTEX=0 0005 ppm TPH as gasoline and diesel=0 05 ppm] <br /> i <br /> Aegis Environmental Inc <br /> 91 2461August 3 1993 <br />